Offshore wind energy is rapidly expanding as a clean and sustainable source of power. However, the development and operation of offshore wind farms can impact marine ecosystems, particularly marine mammals and fish. To mitigate these impacts, rugged monitoring and mitigation programs are essential. Among the innovative technologies utilized in these programs, Passive Acoustic Monitoring Systems (PAMS) have emerged as powerful tools for assessing and mitigating the effects of offshore wind energy development. Let’s have a closer look at the role of PAMS in offshore wind energy development monitoring and mitigation programs, and highlight their applications, benefits, and future prospects.